Method of manufacture of coagulum-rubber articles



- RJW'. ROST I METHOD OF MANU ACTURE OF c oaeunum RUBBER Am xcms' Filed Febi 1 2,;

ATTORNEY Patented May 10, v

"UNITED STATE ROBERT W. ROST, 0F NEWARK,

PATENT. orrlca.

"NEW JERSEY, Assrenon or one-nets T0 ANDREW F. BIGGER, OFNEW YORK, N Y."

METHOD OF MANUFACTURE OF COAGU LUM-RUBBER ARTICLES.

Application filed February This invention relates to sheet rubber from which articles of wearing apparel may be made though it is noted that the invention is not limited to wearing apparel or similar .uses.

One object of the invention is to provide it sheet material having many of the .advan-' tages of rubber, leather or fabric and then additional advantages.

In forming sheets of vulcanized rubber it has heretofore been the practice to mill and mix the rubber very thoroughly, and roll it out ,into sheets by passing it between rollers, and then to vuloanize it. Sheets thus made are not very strong and,split easily, and they deteriorate very rapidly.

. The lasting qualities of unvulcanized rubber coagulum made by coagulating the rubber latex are well known; and similar attem have long been made to form sheets of t is rubber by similar milling processes, but entirely without success. The principal object of the resent invention is to form thin sheets of t" rubber, suitable for making.

wearing ap arel and for other purposes; an this and ot' er objects have been very successfully accomplished as hereinafter explained. l v Other objects of the invention are to improve generally the simplicity and .efliciency of material for such facture and to provide materials and articles of this kind which will be durable, economical to manufacture and which will not deteriorate. I

Still other objects of the invention will a pear as'the description proceeds; and while herein, details of the invention are described, the invention is not limited to these since many and various made without departin theinvention as claimed. 1

The inventive features for the accomplishment of these and other objects are shown from the scope of passed over articles and their manu-- changes may be 12,1925. semi No. 8,858.

hereinin-connection with my improved ma terlal, its method of manufacture and an im proved article of apparel made of this material. j v v Briefly stated, the material comprises a thin sheet of slightly formanious'coagulum throughout and free ofcrusti;- the method comprises splitting a cast slab of eoagulum rubber to form sheets of the desired thickness, and cutting said' sheets to form blanks for articles {and the one finished article here shown as an example is a garter comprising aone-piece'thincoa ulum rubber body port1on including a pa and a band, the means for hooking the band around the leg and the grip for engaging the sock being separately secured to the body portion.

the accompanying drawing, 4., 1 Fig.1 is a sectional view'showing the operation, and

- Figifiisan. outer face view ofgarter madebf the sheet'material. 1

The new sheetmaterial is madeby feeding a cast sla 556i unvuleanized coa lum rubber or coagulum between the rol s 6 and 7 of a leather .splitting 'machine, thereh to form a line of cprnpression in. them her between the rolls at which the rubber is i guided; A longitudinally reciprocating or continuously movi-ng knife 8 Just forward of and parallel to saidline splits the slab,

as it is fed, to form layers of sheets 10 of the desired thickness. A cord 11 secured by grippers 12 to the uppermost sheet and by a weight 15 separates and guides the sheets as they s lit u in a separate direc- -t1on from the s ab w ereb water 18 from a sprinkler 19 may be app ied to the active edge of the knife while cutting, thereby to facilitate the cutting. 4 This operation is continued in the same manner to form additional sheets until the,

desired number of sheets are made or alt rubber having :cut surfaces substantially pulleys 13 and 14 and weighted of the slab is used up. The outer sheets,

with the crust on, may be discarded, the inner la ers or sheets eing free of crust,

tough, e astic and also foraminous. and sub-i. 1.

stantially ,pervious toair; and having all or dyeing by penetration of the coloring matter into the pores of the sheet. The

cut surfaces. They are suitable for coloring sheets maybe cut or stamped out and, if

desired, perforated to form blanks for .ar-

aoeaiea ticles of wearing apparel or for other purposes.

The sheets may be cut any thickness desired. Sheets 1/8 of an inch thick or thicker may be provided if desired. Sheets about 1/32 or 1/16 of an inch have been found very useful, but they may be cut 1/64 of an inch or thinner if desired.

The finished material of this method thus comprises a thin sheet of slightly foraminous, tough, elastic unvulcanized coagulum rubber coagulum slightly pervious to air and having cut surfaces substantially throughout and. substantially proof against oxidation or other deterioration when worn or exosed to the atmosphere. It is absorbent or dyes or colorin solutions; and though it is not thought that the dyes enter 1nto chemical combination, the colors are fast.

.While the material is suitable for making a vast number of different articles of wearing apparel and articles for other purposes too numerous to catalogue here l show by way of example only one such article.

This article is a mans garter (Fig. 2) comprising a one-piece erforated body portion of the thin crustree coagulum about 1/32 of an inch thick, though the invention is in no way limited to this thickness. This body portion includes a triangular pad 31, a band' 32 extended integrally from one upper corner of the pad and upper and lower tabs 33 and respectively from the other upper corner and the lower corner of the pad. A stud 35 attached to said upper tab by means of a small strip 36 of the coagulum cemented to the tab with benzine, receives an eye-clas 37 on the band for securing said ban around the leg. l/Vhile I show the usual slide-buckle 38, this is not really necessary for adjustment, as the band is very elastic and is ractically proof against deterioration. S rid lower tab is passed through a gri 40 and folded upon itself and cemented wit henzine for securing the grip in place.

The garter is worn in the ordinary way and will last for many years as the coagulum is practically free from deterioration.

I claim as my invention:

1. Material tor making articles of wearing apparel; said material comprisirg a thin sheet of unvulcanized, dyed, slightly foraminous, coa ulum rubber slightly pervious to air and having out surfaces substantially throughout. r

2. Material comprising a thin sheet ofunvulcanized foranunous coagulum rubber free of crust.

3. Material comprising a sheet of un-" milled unvulcanized rubber co'agulum having cut surfaces.

4. Material comprising a thin sheet of unvulcanized foraminous 'coagulum rubber having all cut surfaces.

34 extending integrally the slab into sheets of desired thickness and free from crust for forming articles thereof.

7. The method which consists in splitting from a slab of unvulcanized coagulum rubber sheets having crust thereon for discard of the sheets, splitting the remainder of the slab into sheets of desired thickness and free from crust, and perforating the last mentioned sheets for forming articles thereof.

8. The method which consists in splitting from a slab of unvulcanized .foraminous coagulum rubber sheets having crust thereon for discard of the sheets, splitting the remainder of the slab into sheets of desired thickness and'fre from crust, and impregnating the last mentioned sheets with coloring matter for forming articles thereof.

9. The method whlch consists in compressing a slab of unvulcanized coa lum rubber for forming a line of compression in the rubber, splitting from the slab at said line of compression sheets having crust thereon tor discard of the sheets, and'splitting the remainder of the slab while under said compression into sheets of desired thickness and tree from crust for forming articles thereof.

]0. The 'method which consists in compressing a slab of unvulcanized foraminous coaguluui rubber for forming a line of compression in the rubber, splitting from the slab at said line of compression sheets having crust thereon'for discard of the sheets, splitting the remainder of the slab while under said compression into sheets of desired thickness and free from crust, impregnating the last mentioned sheets with coloring matter, and perforating the sheets for forming articles thereof;

11. The method which consists in compressing a slab of unvulcanized coagulum rubber between rolls for forming a line of compression in the rubber, splitting from the slab by cutting means applied at said thereon for discard of the sheets, splitting by said means the remainder of said slab while under said com ression into sheets of. desired thickness and tree-from crust for forming-articles thereof, and during splitting operation by said means applying water to the slab at said line of compression for facilitating the splitting of the slab by said means.

1 Signed at- New'York, in the county of New York and State of New York, this 11th day of h ebruary, A. D. 1925.

. v ROBERT W. ROWE.

Elli

line of compression. sheets having crust 

